Department of Neurology;
First Affiliated Hospital of Jinan University;
Guangzhou 510632;
Guangdong Province;
China;
Department of Radiology;
First Affiliated Hospital of Jinan University;
Guangzhou 510632;
Guangdong Province;
China;
transient ischemic attack; stenosis; magnetic resonance-perfusion-weighted imaging; diamox; cerebral perfusion; cerebral reserve capacity;